You have released php 5. This is really great. I've talked to my
hosting company and they have informed me that when a stable release
of php 5 has been announced they will upgrade to php 5 right away. Do
you have any estimate of when a stable release of php 5 will be
announced?
It depends on your definition of "stable". Some hosting companies already provide PHP 5.0.0, or are planning to provide it in the near future. Sure there are going to be bugfixes, but whether they treat 5.0.1 as stable enough, or they will not be happy until 5.0.6 (if it will ever be released), is impossible to tell from here.
Regards,
Gabor Hojtsy