The different size classes of the Asian Generations seem to have been released a few weeks apart from each other, and now it is the Leader Class being released.
This is the size class that Hasbro won't be releasing in America, so if any of these interest you, don't wait around for cheaper stock to flood the market from American sources.

Initially, there was only two figures known for this size class - Starscream and Ironhide - but a third one popped up within the last week... Megatron.

Each of these are in Movie packaging though, possibly because there was never a Generations-coloured packaging template done up for that size class, and they didn't see the point of creating one just for these three figures.
As such, if these weren't specifically being labelled as "Generations" by Hasbro Hong Kong, I'd be putting these in the Movie line (and news section).

So the three figures are...
- Starscream (Gen1 coloured version of the 2010 toy, which Japan released as a "Masterpiece" toy)
- Ironhide (Gen1 red colouring of the 2011 toy)
- Megatron Dark Energon Edition (a purple/silver redeco of the TF2 Tank Megatron toy)


A couple of things has me thinking that the Megatron isn't part of the Asian Generations line... and may have just originated from a toy dealer assuming it was, just because it was coming out at about the same time and similar Movie packaging.
Reasons:
1 - only Starscream and Ironhide are released together, Megatron doesn't appear to be packed with anyone else. (not conclusive, as some waves can be just one character in the master cartons)
2 - Megatron is the only Asian Generations toy that DOESN'T homage a Gen1/Gen2 toy or colouring.
3 - Megatron has TakaraTomy on the packaging, while the other Generations toys (including the other Leaders in Movie packaging) DON'T.

The Megatron toy looks more like a one-off by TakaraTomy, cashing in on the new TFPrime "Dark Energon" concept. The cause of the confusion though, is that Hasbro HK sells TakaraTomy-packaged toys (including this one), and just did it at the same time as Starscream and Ironhide's release.

(so until something official comes up disputing it, I'll only classify Starscream and Ironhide as "Asian Generations" toys... and will classify Megatron as a "Movie" toy)


Now for the pretty pictures....

Starscream and Ironhide in both modes.

Megatron in and out of packaging, and here as well.

Starscream in packaging.