Are you talking their Germany office or their new space in Redmond? In Washington it is actually an almost 10 year lease with right to extension. Very unlikely they'd be signing those kinds of deals unless they were confident in the path they are on.
The real question is what is the timeframe they are planning for? They have enough cash on hand and shares in the treasury to bridge another 2 years even with increased burn rate, but their share price will not hold if they are not showing additional revenue yet this year.
News 
Market Data 
Discover 
