Rules for online games for 1.5: http://h3hota.com/ru/rules
The main difference from 1.4.2 in the rules is the removal of the rule about bypassing guard posts, as, except for Jebus (where the need to break through the guard posts remains), it is no longer relevant anywhere else. Some other rules related to fixed GSC bugs have also been removed.
The recommended time for Online Hotseat (OH) has also been adjusted; average paths have been set for Diamond and Mininost; and recommended settings have been added for new templates.
The rules for 1.4.2 will remain on the forum for ongoing tournaments.
Also here: http://h3hota.com/ru/template-format
there is a description of the new features of the template editor. The text at the link is not an instruction on how to create templates, but a detailed description of the new features. In addition, some details of the "theory" of generation are described (nothing particularly new, just a collection of what has been published before), which may be necessary to know for the competent creation of a template.
This text is currently only available in Russian.