basically the way i see 3.2 going is this,

conquest badges will be able to be converted to the smaller emblems a the current 1-1 ratio leavign the tier 7/7.5 costs roughly unchanged and purchaable with either conquest or heroic badges, the higher tier pieces will be conquest only and costs adjusted to 200% plus what they cost now to keep the "welfare epic" haters at bay (see the cost of sunwell patch epics vs previous sets). im positive they will NOT grandfather heroic badges and make them conquest badges for the simple reason that it would entail "unnecessary coding" that they could spend elsewhere to get the patch out faster, and avoid the viertual economy from crashing due to people banking items until patch. so my personal plan is to buy gems/orbs with my banked badges, cut them and ah them the saturday after patch release. the upgrades from tier 7 to tier 8.5 are small for my team because i only multibox 5 man content and i raid etc on my main paladin and i have done every heroic except occulus and the 2 old kingdom, so the time it takes to farm the new emblems to get the upgrades is worth the wait for the profit ill make milking the market when demand is high for enchanting mats/leather/cloth/gems.

with that said if money isnt a concern to you ( i dont do dailies except heroic/reg dungeon) and their are viable upgrades to your current gear, get em it aint gonna get cheaper.