According to the BBC the ban on political activities by parties in Thailand has been lifted.
Obviously this will not include Thai Rak Thai which has been dissolved by order of the Constitutional Tribunal.
However, according to the Bangkok Post this is only a partial lifting of the restrictions stating that "the cabinet agreed to partially lift the Council for Democratic Reform's Announcement No 15 and allow political parties to be meet and act, with immediate effect"
This addresses section 1 of Announcement number 15. However it does not address the issue of the setting up and registration of new political parties (section 2 of Announcement number 15) and given the dissolution of Thai Rak Thai there is likely to be significant demand for at least one new party. Apparently this will be addressed by the Council of State who are to look at a a bill to "modify section 2 of the announcement". The critical word here would seem to be modify. If there were to be no ban on new political parties then section 2 could just be lifted and the implication of the need to modify it is that this is not to be the case!