I really hope everything doesn't come out at once in the new season.
Was just on PBE and everything felt so weird.
- Masteries are going to take a lot of time to get used to (no more 5% cdr rip)
- Item changes are a going to be really strange for ADC's. Had no idea what to build.
- The rest can come out at full speed easy to get used to.
I think Riot should release the item changes first, then maybe 2 weeks later when everyone is accustomed to the items bring out the mastery change.