Razl - Your current licenses will continue to function as they currently exist. Once a new version of Sitecore Razl is released you will need to purchase a new license key for $99. New licenses will be on an annual subscription basis and will include all support and maintenance.
TDS/Razl Bundle - When your current support & maintenance coverage ends, you can convert your existing TDS/Razl Bundle licenses to Sitecore TDS Bundle annual subscription licenses. You are eligible for a discounted price of $349 ($100 off new Subscription price for a bundle), and we are allowing our existing clients to lock in that rate for an additional 2 years via a signed agreement. If you choose not to take advantage of this offer your existing TDS/Razl bundle licenses will be restricted to product versions accessible by your old support and maintenance agreement and you will need to purchase new subscription licenses in order to access future release of Sitecore TDS.