According to part of the article that focused on the topic of Crabtree's sore feet, Delanie has lost weight to essentially focus solely on playing wide receiver. I know this move may not change too much, but this could be a significant deal.
NOTES: How vigilant is minicamp organizer Alex Smith? Tight end Delanie Walker said he must have received 50 calls and texts from Smith imploring him to attend workouts. ... Walker lost 15 pounds from last season and expects to work more as a slot receiver this year.
Read more: http://www.sfgate.com/cgi-bin/blogs/ninerinsider/detail?entry_id=90538#ixzz1Oe5HxA3F
Previously listed at 6-0 242, this would now put him at about 6-0 227, still a very big receiver, but likely more agile and probably at least a little faster as well. Considering how fast he already was at 242, that's scary -- in a good way. With little need for him be another blocking TE on plays or to play H-back since we have Byham, this move sort of makes sense.
I also believe that perhaps carrying around less weight could possibly help with the prevention of injury, like Walker has had at various points early in his career.
The only downside one could gather from this move is, perhaps this means the battle at WR will be tighter than we think if they consider Walker a good enough utility player to carry one less WR.