According to Dana White at today's fan Q&A (via MMA Weekly):
"From what I'm hearing, Jose Aldo's interested in testing himself at 155 pounds. So probably very soon."WEC's top Lightweights include:
"We're working on a lot of things right now we'll be announcing in the next couple of months."
"There's some interesting fights with those guys (listed below) so we're working on putting those together."
Ben Henderson, Anthony Pettis, Ricardo Lamas, Donald Cerrone, Bart Palaszewski, Shane Roller, Kamal Shalorus, Maciej Jewtuszko, Zhang Tie Quan, Chris Horodecki, etc.