If you blinked, you may have missed the KO Smokescreen that came out a couple months ago. Searching around on Taobao and ioffer, I can't find anybody selling it right now, so it seems like they did not produce very many. Scratchdesk bought one when they were available, and made a great ID guide you can check out here:
The Gnaw ID Guide has been updated to add some more differences and better pictures:
After a brief hiatus, it looks like the KOs are back. Computron and Abominus are apparently out right now. Computron uses the same box as the version 2 scam box in the ID Guide linked to below. Abominus comes in an English-language gift set, which never existed before, so it should be easy to spot. Scorponok is slated for July.
Edit--Correction: looks like the two boxed combiners may not be out just yet. Haven't seen any on Taobao so far, at least. Will keep you guys posted.
Highendtfs in collaboration with Headrobots have released an upgrade kit for Botcon Gigatron: Skel-E-Tron! Limited to only 200, pick yours up here:
US orders: http://www.amazon.com/gp/product/B00A930YX6
Here's a quick summary of recent counterfeit TF news:
There are blue and white versions of the counterfeit Bumblebee coming out.
Two real white versions exist: Ehobby Bugbite and white Mexican Bumblebee. Bugbite has a Cartoon Bumblebee head and Mexican Bumblebee had a read red faceplate. In contrast, the counterfeit has a silver faceplate and an original toy Bumblebee head. So that's one easy way to tell the difference out of package.
The counterfeit blue Bumblebee appears to be based on the rare Mexican variant. One major difference is that the counterfeit has a rub sign chest sticker, but the original has a normal chest sticker.
Pics of counterfeits:
Pics of white and blue Mexican Bumblebee:
Yep, finally got around to adding in all the missing ID guides. I've added:
If I've missed anything, let me know, but I believe the guide now covers all counterfeits released to date.