A word of caution on Spelunky: The game should feature cross-buy, meaning a purchase of the Vita version unlocks the Diablo 3 Gold version. That said, the PlayStation Blog's deal specifically marks out Vita, and on the PlayStation Store the offer is only for the Vita version. We've reached out to Sony to confirm and clarify what today's discount specifically applies to.
Blizzard has posted a lengthy Diablo 3 Gold US on how to opt into the beta, report bugs and generally contribute toward creating the best expansion possible. There's also a specific process you'll need to follow in order to import your existing character, so be sure to read through the FAQ before diving in.
The Standard Edition will grant access to the game for $39.99, while the Digital Deluxe Edition at $59.99 includes spectral hound minion for Diablo 3 Power Leveling, a treasure goblin pet for World of Warcraft and portraits for StarCraft 2. Finally, the Collector's Edition includes everything from Digital Deluxe, plus an Angel of Death mouse pad, art book and behind the scenes Blu-ray/DVD.
On the second deal of Christmas, PlayStation Europe offered to me: Diablo 3 Gold EU on PS3 for £30, and Spelunky for £5.50 on Vita, with an additional 10 percent off Derek Yu's hard-as-nails platformer for PlayStation Plus members ... in a pear tree.