Here are the latest Ultrabooks Brands and models as well as price , release date and Intel processor of base Model , Base Ram ,Capacity , thickness , weight, battery life, display size and resolution in that order. These are only base models; priced in USD .Some Ultrabooks have two drives.

“I had this ultrabook for a week now and I can say it’s amazing so far. It’s thin, light, fast and comfortable. It looks good, it’s quiet and cool (I mean temperature). Before I bought this I read all the reviews available online. I completely understand the reviewers have to criticize something but for me this computer works perfectly well.”. Read this reviews here.
Acer Aspire S3-951-6646 13.3-Inch Ultrabook.

Acer Aspire S3-95 $1,200 November 2011 Core i5-2467M (1.6 GHz) or Core i7-2637M (1.7 GHz) 4 GB 256 GB SSD 13.10 mm / 17.50 mm
(0.51 in / 0.69 in) 1.35 kg (2.98 lbs) 36 Wh, ~6 hours 13.3″ 1366×768

Acer Aspire S5 our full review

There is a cheaper Acer Aspire TimelineX AS3830T-641 cost $529

“You want a computer that is powerful enough to do real work. You also want something that has great battery life and is really portable. Oh yeah, you want it to look nice too. This machine is terrific and feels rock solid. It also has nice finishes like matching sleeve and case for the included wired ethernet and VGA video out dongles.”Read the rest of this review here.

Asus Zenbook UX21 $966 October 2011 Core i5-2467M (1.6 GHz) 4 GB 128 GB SSD 16.76 mm (0.66 in) 1.10 kg (2.43 lbs) 35 Wh, ~5 hours 11.6″ 1366×768
Lowest prices Asus here

Asus Zenbook UX31E-DH52 $1,100 October 2011 Core i5-2557M (1.7 GHz) 4 GB 128 GB SSD 17.00 mm (0.67 in) 1.30 kg (2.90 lbs) 50 Wh, ~7 hours 13.3″ (Glossy) 1600×900
The cheapest Asus Zenbook is the ASUS U31SD-AH31 13.3-Inch Thin and Light Laptop (Black)which is going for about $580.

Dell XPS 13 $400 February 2012 Core i5-2467M (1.6 GHz) 4 GB 128 GB SSD 6-18 mm; 12 mm (0.47 in) average 1.36 kg (3 lbs) 47 Wh, ~8 hours 13.3″ (Glossy) 1366×768
Check Dell XPS for less than $500 here.

“It’s very light compared to the normal 6+ lb laptops I usually use, traveling with it is a pleasure! Performance is decent considering its size and it has so many ports compared to other ultrabooks. It has an Ethernet port! That’s a big deal for me as hotel wi-fi networks are usually really bad”. Read this review here.

HP Folio 13 $849 December 2011 Core i5-2467M (1.6 GHz) 4 GB 128 GB SSD 18.00 mm (0.7 in) 1.49 kg (3.3 lbs) 59 Wh, ~9 hours 13.3″ 1366×768

Our Top recommendation: HP Envy 14 Spectre $1,399 February 2012 Core i5-2467M (1.6 GHz) 4 GB 128 GB SSD 20.00 mm (0.8 in) 1.8 kg (3.95 lbs) ~9 hours 14″ 1600×900

Lenovo IdeaPad U300s $1,049 November 2011 Core i5-2467M (1.6 GHz) 4 GB 128 GB SSD 14.99 mm (0.59 in) 1.34 kg (2.95 lbs) 54 Wh, ~8 hours 13.3″ (Glossy) 1366×768

Lenovo IdeaPad U300e $800 February 2012 Core i3-2367M (1.4 GHz) or Core i5-2467M (1.6 GHz) 2 GB 500 GB HDD + 32 GB SSD4 18.3 mm (0.72 in) 1.58 kg (3.5 lbs) ~8 hours 13.3″ 1366×768

Lenovo IdeaPad U400 $899 May 2012 No Data 4 GB 64 GB SSD or 500 GB HDD 21mm (0.83 in) 1.9 kg (4.2 lbs) ~8 hours 14″ 1366×768

Lenovo Thinkpad T430u $850 Q3 2012 No Data 4 GB 128 GB SSD or 1TB HDD 20.3mm (0.8 in) 1.77 kg (3.9 lbs) ~6 hours 14″ (Matte) 1366×768

Lenovo IdeaPad “Yoga” $1,200 Q3 2012 Ivy Bridge No data on base model 256 GB SSD 17mm (0.67 in) 1.4 kg (3.1 lbs) ~8 hours 13.3″ (folds into tablet) 1600×900

Lenovo IdeaPad U310 $700 May 2012 No data 4 GB 64 GB SSD or 500 GB HDD 18mm (0.71 in) 1.7 kg (3.75 lbs) ~8 hours 13.3″ 1366×768
The cheapest Lenovo is the Lenovo Thinkpad X120E 11.6-Inch It goes for $399.

LG X-Note Z330 $1,500 December 2011 Core i5-2467M (1.6 GHz) 4 GB 120 GB SSD 14.7 mm (0.58 in) 1.21 kg (2.67 lbs) ~6 hours 13.3″ 1366×768

Samsung Series 5 13 Chromme book“ $449 January 2012 Core i5-2467M (1.6 GHz) 8 GB max 128 GB SSD / 256 GB SSD / 500 GB HDD 14 mm / 17.6 mm (0.55 in / 0.69 in) 1.38 kg (3 lbs) 45 Wh, ~6 hours 13″ 1366×768

Samsung Series 5 14″ $879 January 2012 Core i5-2467M (1.6 GHz) 8 GB max 128 GB SSD / 256 GB SSD / 1 TB HDD 20.9 mm (0.82 in) 1.84 kg (4.06 lbs) 45 Wh, ~6 hours 14″ 1366×768
There is a cheaper Samsung Series 3 NP350U2A-A01US which is priced at $649.

Samsung Series 9 13″ $1,400 February 2012 Refresh Core i5-2537M (1.4 GHz) 4 GB (8 GB max) 128 GB SSD 12.7mm (0.5 in) 1.10 kg (2.43 lbs) 47 Wh, ~7 hours 13.3″ (Matte) 1600×900

Samsung Series 9 15″ $1,500 February 2012 Refresh Core i5-2537M (1.4 GHz) 4 GB (8 GB max) 128 GB SSD 15.74 / 16.25 mm (.62 in / .64 in) 1.59 kg (3.50 lbs) 47 Wh, ~7 hours 15″ (Matte) 1600×900

Toshiba Portege Z830 $900 November 2011 Core i3-2367M (1.4 GHz) (i5, i7 models exist) 4 GB 128 GB SSD 16.00 mm (0.63 in) 1.11 kg (2.45 lbs) 47 Wh, ~8 hours 13.3″ (Matte & Glossy models) 1366×768

Toshiba Portege Z835-P330 $769 November 2011 Core i3-2367M (1.4 GHz) 4 GB 128 GB SSD 16.00 mm (0.63 in) 1.11 kg (2.45 lbs) 47 Wh, ~8 hours 13.3″ 1366×768