Soooo... this is a trailer for Hurt, Out of the Past, New Recruit and the Human Factor (and possibly Legacy as we don't have a description for that)
Here's my two cents:
Hurt- seen it, great episode, good to finally see some serious character development for Miko, but at the end Ratchet said 'he will never be the same again' or something similar. if i recall correctly, one of the directors said to expect characters to get upgrades and changes, and i think Bulk is the perfect candidate for that, whatever it is
Out of the Past- SHOCKWAVE! I have a feeling that the whole episode will be an experiment of shockwave's, rather than a flashback, and it's good to see cliffjumper again.
New Recruit- My money is on Smokescreen given all the chatter, but i would have preferred him to be red. I'm also not surprised by them introducing a new autobot though, as tfp tends to give us two opposing characters at a time. and i hope that starscream finally has his t cog back (maybe shockwave could do it?)
Human Factor- Silas seems to be relatively intact, leading to believe Breakdown is more of an exo-suit rather than a completely new body for him. Breakdown himself seems to have some pretty huge shoulder cannons now, and also to be sporting a new Rust and Grey colour scheme. and i noticed that there is a short scene where BD is trying to stomp Jack, at what appears to be a forest right next to Autobot HQ
Legacy- seeing as none of the other scenes seem to match with the above episodes, i'm going to presume that this is the episode with Megatron's arm upgrade. At the end of the trailer Optimus is wielding what i can only hope is the Star Saber, and Megatron may have the Dark Saber, or the Skyboom shield, or maybe something else entirely. Either way, Meg's sword is attached at his shoulder by a Purple and Gold armour piece, rather than being a full arm upgrade.