PHP and threading?

Hi, I was wondering, is PHP in future going to support threading? This would be a very nice feature. I'am currently working on this project of mine, a FTP Server build in PHP which serve MySQL database records. It actually does work very nice, also multiple clients at the same time. It supports passive and active FTP. But my problem here is that the FTP server only can handle one file transfer at a time. I thought of doing something with ticks. So threading would be a very nice feature! Are there plans implementing it? Cheers, Arjen