All the 3rd-party modules should be compatible with 7.3, which are already compatible with 7.2. There is no compatibility breaking changes, even templates.

As per announcement we've made earlier -, it will be update every half year, so we'll make more often updates and include less features - all we can make for the available time. Since it looks like we can make 7.3 a bit earlier, then we can spent a but more time for 7.4 and see more include more features into it.
Below is the legacy version of the Boonex site, maintained for Dolphin.Pro 7.x support.
The new Dolphin solution is powered by UNA Community Management System.