The current metagame shows a growing shift towards aggro decks. The main decks to watch out is delvers. All and any form of delver decks are to watch out for. These decks outperform most others. Aside from delvers, tempered steel recently shows a rise in popularity after much anticipation. Now with these changes in the metagame, to be prepared, one must be able to wipe the field many times. Running decks that are not these archetypes shows an increasing demand for day of judgement, black sun's zenith, ratchet bomb, etc. Spot removal sees gut shot, geistflame take over as dismember slightly fades in the background.
Decks to see:
Delver
Tempered steel
UW humans
Mono red
Solarflare
Wolf run rock
Esper control
Puresteel (not too sure)
Thanks for the info apple