State of Future AV Assets for the Rift

Riot, any word about releasing announcer packs, BGM packs, or having seasonal/event specific makeovers for fSummoner's Rift like the season two winter map or Doom Bots map or any other AV assets? Are you allocating resources to develop these products or is that only going to be for special events?

You've done these in the past with assets like the Pirate announcer during the Bilgewater event or the team themed bases during your ESports games but are we going to benefit from these assets?

I just want Morgan Freeman announcing my pents kill fails over a Bilgewater themed map while my Classic 50s automobile skinned minions leave my C9 themed base :^).

Seriously though I would be happy with announcer packs and event/season specific maps for the Rift.