For those IBrowse 2.5 users who originally purchased the cheaper 68K/OS3 only discounted upgrade key and now wish to also use IBrowse 2.5 on an OS4 system, we are now pleased to offer the option to upgrade your key to a full 2.5 key which works on PPC/OS4 too. The pricing of this option added to your original payment means you end up paying the same as if you payed for the full 2.5 key in the first place. The option can be found on the store towards the bottom of the list of available options and it will use your e-mail address to detect if you are eligible for the sidegrade or don't need it as you already bought a full license.