> When are they planning to completely drop php4 support ?
>
> I'm not totally sure, but so far I haven't found any indication that
> they will.

one indication could be that the last php4 release fixed security issues 
which had been fixed in the php5 series months ago...

...another would be that the gentoo devs are dropping support.

and then there is the release notes currently the first item on the 
frontpage of php.net (the PHP homepage):

<quote>
This release wraps up all the outstanding patches for the PHP 4.4 series, 
and is therefore the last normal PHP 4.4 release. If necessary, releases 
to address security issues could be made until 2008-08-08.
</qoute>

kind regards
Thilo