When the unvaulting happens relics will be added to the game that drop from missions
I think it's pretty likely that the relics will be from PoE bounties again. Hopefully they'll talk about that during this week's devstream.
PoE bounties are a good thing for vets, not so good if you're new since PoE tends to be considerably harder than normal planets of the same level.
I saw they are unlocking Rhino Prime next week - Will I be able to farm the blueprints and mats pretty easily while the event is active? Once I get a PC platinum discount from a daily log in reward I'm going to buy platinum - but I am not necessarily opposed to buying the bundle for Rhino Prime either if it's not like $100+.
$20 for either accessory bundle, $40 for either frame pack, $60 for everything. The accessory bundle that includes the prime extractor is the most interesting one since that is the only way to get ahold of that item, and it comes with a blueprint to build more.
If you happen to get a -75% discount I highly recommend using it on as large a pack as you can. I always buy the $200 pack when I get one, but it's been over a year since I last had the opportunity. Not sure if it's still a fairly sure thing for a new account, but the old trick of not logging in for a month doesn't work anymore. I had 100% success with it for the first 4 times I wanted a -75, but since then it's been nothing but -20's and a couple -50's. Really annoying actually, as I'm of the opinion that 4200 plat for $50 is a fair price and anything above that is retarded when you consider what that much plat buys (from players, I almost never spend anything on the market). ~$36 for a rank 3 arcane energize? Sure, I'd pay that. $144 though? Fuck that. Even $72 is crazy. Same goes for mods when you consider the difference between a rank 0 primed mod and a rank 10 is about 350p now. (Which should tell you something about how awful the endo farm is these days--12 to 18 months ago the difference was only about 120p.)
And there's only one weapon skin I know of that changes stats (manticore). It's definitely not a normal thing. The first thing to look at if you want cosmetic stuff is the palette bundles. They're a pretty good discount off buying them separately and the easiest way to make your frames look good because the free colors are rather ... lacking. If you have Amazon Prime, don't forget to grab the palette + Liset skin from that (and Trinity Prime too, of course).