美服官网最新的公告里，2013年出新英雄的速度会变慢，大概3-4周一个，为的是让玩家有充分的时间积累ip。
原文：
New Champion Release Schedule
You may have already noticed the rate at which we’ve been releasing champions has slowed. Moving forward, we’re targeting 14-17 new champions in 2013 -- around one every 3-4 weeks. This gives you more time to accumulate IP between champion releases, and it enables our design team to spend more time developing and polishing each new champion.

同时rp价格将会变得和ip一致。大家注意7800ip那里标明了第一周，为什么是第一周呢？下面就说说新的英雄价格政策。
原文：
RP and IP Price Tiers
We’ve also updated the RP cost of champions so that that they’re more strongly correlated with the IP price. RP costs now match IP cost accordingly:
450 IP 260 RP
1350 IP 585 RP
3150 IP 790 RP
4800 IP 880 RP
6300 IP 975 RP
7800 IP (first week) 975 RP

2013年的英雄价格将会采用逐步递减的方式：
新英雄出来的第一周将会是7800IP
出来一周后减少到6300IP
同时，每次英雄更新，最老的6300英雄将会降到4800
最后，每三次英雄更新，将会有一个额外的4800及以下的英雄降价，
4800降到3150，3150降到1350，1350降到450，根据英雄价格来定。
原文：
New Champion First-Week IP Price
All brand-new champions will cost 7800 IP/975 RP for the first week only, and will be reduced to 6300 IP thereafter.
Tl;dr:
New champion launch price is… 7800 IP / 975 RP
After one week, the price is reduced to… 6300 IP / 975 RP
Each release, the oldest 6300 is reduced to… 4800 IP / 880 RP
Each third release, an additional 4800 IP or lower champion is reduced to one of the remaining tiers…
3150 IP / 790 RP
1350 IP / 585 RP
450 IP / 260 RP

官网链接：http://na.leagueoflegends.com/news/champion-pricing-timing-changes