Tekken X Street Fighter Development Not Yet Started

According to Tekken bossman Katsuhiro Harada development on the upcoming fighting title, Tekken x Street Fighter hasn't really begun yet.

Instead Harada stated that most of the development time has been spent on Capcom's fighter Street Fighter x Tekken, the game's fighting counterpart.
“We really haven’t started on Tekken X Street Fighter," Harada stated at Namco Bandai's event in Dubai earlier today.

“Things are going well with Street Fighter X Tekken and we’ll have more on that at E3. We hope you look forward to that.”
Both titles were announced at ComicCon last year in San Diego.

E3 will unveil more.