This release also includes new special features initially programed for the final version of WAMP5 1.4.5 :
- logs in one directory and access through the WAMP5 menu
- added eaccelerator (not with the RC1 release)
Since logs have changed , the Webalizer add-on will not work with this RC. You'll have to wait for the final WAMP5 1.4.5 to see a new webalizer add-on (the PHP4 add-on will also be updated with eaccelerator).
If you want specific software components updated, you should go the homepage related to the specific software and read the instructions (example - http://www.apache.org) on how to upgrade/install the software. Not sure how compatible it will be with WAMP or what modifications you would need to make to WAMP itself, perhaps you should contact WAMP support on that issue.
An easy way of getting around this would be to google for a tutorial on how to setup a WAMP yourself. Then, you would be in full control and understanding of the software setup/version/compatability.