Well, that does not adress the issue of magic items or higher levels.In the playtest packet, pg 3, paragraph 3:
Yes, but it should have.Uh... whether you use point buy or roll, this has never been true in D&D's history.
I would totaly cap the scores at 20 and give out 2 +1s every 4 levels
4,8,12,16,20 so a 15 stat at level 1 can become a 20... But a 20(18 roll+1 race+1 class) never becomes a 25
Then items give scores...belt of giant str 24 would be epic
I hope there is no increase to ability scores from gaining levels.

(Dungeons & Dragons)
Rulebook featuring "high magic" options, including a host of new spells.