IFA, one of the world’s oldest consumer electronics exhibitions, kicks off Friday in Berlin. What cool gadgets are people expecting to see? Well, 3D is expected to be a major theme at this year’s show, Sony will probably offer some hands-on time with its S1 and S2 tablets, and HTC may be showing off a new Mango phone, according to Boy Genius Report.

Here’s a quick rundown of a few of the other reports out there:

Samsung, Samsung, Samsung: Samsung got the ball rolling early, announcing that it will be unveiling an LTE version of the Galaxy S II — maybe making the upcoming U.S. launch of the phone lose a little bit of its sparkle. The company also announced that it will take the wrapping off an 8.9-inch tablet infused with LTE.

This Is My Next reported that the company will also be releasing a 7.7-inch version of the Galaxy Tab, a Wave 3 smartphone and a mysterious, as-yet-undetailed device called the Galaxy Note.

Toshiba: Another point of speculation, from Android and Me, is that Toshiba will be unveiling a thinner version of its versatile Thrive tablet. The current version is .63 inches thick, compared with the slimmer, trimmer .34-inch iPad and Galaxy Tab, but it has full-size USB, SD card and HDMI ports. The site said the company is planning a slimmer tablet that’s half the thickness of its predecessor, with mini-versions of each of its expansion ports.

LG: From Slashgear come reports that LG is planning to show off new monitors that are the latest in chrome-industrial chic — two super-thin LCD, 23-inch monitors. And from Android Community comes the report that the company is also supposed to be unveiling a 3D game conversion engine for smartphones, which will let developers pump up the depth on their titles with a much smaller investment — perhaps for LG’s own 3D smartphone, the LG Optimus, which will soon hit AT&T as the LG Thrill.

HTC: In addition to the rumored Windows Phone 7.5 device (a.k.a.. the Mango phone) HTC is also likely to show off the HTC Puccini, said gadget Web site T3. The 10.1-inch tablet is rumored to have a 1.5GHz dual-core processor, 1GB of RAM and an 8MP rear-facing camera. HTC already has a tablet on the market — the HTC Flyer — but this size will set up the company’s iPad rival.

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