Hi David,
We appreciate your interest.
I can give you a brief progress report.
Currently we work on rendering tables. Apart from that, there is still lists and floating shapes to support in rendering. Characters, lines, paragraphs, pages, columns, sections, inline images are all working very well in the new renderer.
Overall, work on rendering was delayed several times due to other important features that had to be put through. For example, DOCX export and import had its impact on rendering work.
I don’t feel comfortable releasing betas of new rendering yet as it will require even more resources from us and can therefore delay work even further.
Beginning of this year is still a valid estimate, although the release will not happen tomorrow.