There appears to be some confusion regarding Apache-SSL and mod_ssl. To set the record straight: mod_ssl is not a replacement for Apache-SSL - it is an alternative, in the same way that Apache is an alternative to Netscape/Microsoft servers, or Linux is an alternative to FreeBSD. It is a matter of personal choice as to which you run. mod_ssl is what is known as a 'split' - i.e. it was originally derived from Apache-SSL, but has been extensively redeveloped so the code now bears little relation to the original.
Apache-SSL continues to be developed and maintained, our main focus being on reliability, security and performance, rather than features and bells and whistles. I hope this makes things clear. (Adam Laurie)