MMR will soft reset at end of S3 similar to end of S2

@Vaelstra:

2013-10-01 19:40:54 UTC
@RiotPhreak this is my first season playing League, what happens at the end of S3, do I have to start my ranked q over from nothing??

@RiotPhreak:

2013-10-01 23:33:49 UTC
@Vaelstra Your MMR will reset closer to 1200, but not to 1200 exactly. So you'll end up playing vs. people of similar skill.

https://twitter.com/riotphreak/status/385185816315564032