Sony Mobile event invites tease sizable surprise, could mean Xperia Z Ultra

Several French sites report receiving invites (shown above) to a Sony Mobile press event promising a surprise of size while showing off a device's slender side profile and a stylus. The reference could be a teaser for the rumored Xperia Z Ultra, believed to be a Sony competitor to the Galaxy Notes of the world featuring a 6.44-inch 1080p display and possibly a Snapdragon 800 CPU inside. The buttons also seem to match another leaked image, and invites have also gone out for events in Germany and China on June 25th, while the message itself encourages recipients to "note" it in their calendar.