From Jan Drago's Twitter feed:
Image by David C. Wong
"Friends, join me at 12:30 today at SAM's Hammering Man for my campaign kick-off announcement!"
She is likely going to focus her campaign on the stylistic differences between herself and the current mayor so making it official at an art museum seems appropriate. Drago actually set up the account this weekend,so the pending announcement isn't exactly a surprise. Not that it hasn't sounded like a done deal for awhile now.