If you purchased a 5 pack or more of Ext JS and/or GXT licenses, those are perpetual. However, you must renew your Maintenance and Support Agreement on an annual basis. Sencha Test is a term-based license, and you can extend the term after the initial term expires.
If you have purchased Single Developer Subscription licenses, you will need to renew your subscription to develop applications. Your annual subscription includes maintenance and support. Distribution and End User use rights are perpetual. Further development rights require annual renewal.