I haven't been around Twitter much today, but according to kstewartfans:
"People are posting as "old" because Rob and Kristen are wearing the same clothes from the Eclipse Edward/Bella/Jacob parking lot scene, but two different people tweeted different pictures saying they're from today and apparently filming a Volvo commercial"
Sources are in Los Angeles
RT @wantsomeRpattz omg edward and bella are filming a volvo commercial!! http://twitpic.com/2zv2j4
RT @wantsomeRpattz they're here at my school!! Sorry trying to get a better picture!!
RT @yrffej24 There filming twilight at my schoool..!!!! Everybodys going fucken crazy. Not kidding.. http://plixi.com/p/52219466
RT @wantsomeRpattz Asked a crew member and found out that filming is going on till 10pm!!
MAKE WHAT YOU WILL!!