Hi Ann @ganncamp,
your kind mention of the upcoming 7.5 release triggered my comment here 
Does exist, by any chance, a linkable document which describes “an raw outline” of your general desired release-cycles (for latest)? Please do not understand this as a question for hard dates or hard timeframes measured in weeks/months.
More like a “in a year maybe 5 to 10 releases for the non-LTS” … or any kind of general guideline?
For example: from a different posting here i take the (from Sept '18) mention that the LTS will probably be upgraded about every 1,5 years. (//edit tbh: it was said in that link, that the info about ~18Months came from downloads-page. I was not able to confirm that today as i did not find any kind of mention there right now)
cheers
Daniel