I received this information from Daniel Horowitz of MyHeritage today:
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Great news! Our team just rolled out an update to Theory of Family Relativity™, adding an impressive 103 million new theories — a 44% increase that brings the total to over 336 million.Theory of Family Relativity™ is the ultimate tool for smashing brick walls and solving DNA-Match-related mysteries. It’s the only DNA tool on the market that leverages historical records as well as family tree and DNA data to suggest how a given DNA Match may be related to you.
Because of the vast amounts of data involved, Theories of Family Relativity™ are calculated and refreshed on a periodic basis. With this update, 3.5 million DNA kits now have at least one Theory of Family Relativity™ — a 20% jump since the last time the data was refreshed.

Look for the purple banner at the top of your DNA Matches page that indicates that you've received new theories! For those who don’t get any new theories, this is a great reminder to build out their trees as much as they can to increase their chances of receiving new theories next time. More information on the update is on the blog.
By the way, we just launched our Early Black Friday DNA Sale — another great opportunity for all to stock up ahead of the holidays.
Look for the purple banner at the top of your DNA Matches page that indicates that you've received new theories! For those who don’t get any new theories, this is a great reminder to build out their trees as much as they can to increase their chances of receiving new theories next time. More information on the update is on the blog.
By the way, we just launched our Early Black Friday DNA Sale — another great opportunity for all to stock up ahead of the holidays.
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NOTE: The last update to MyHeritage's Theory of Family Relativity was in late 2024. Since then, my list of Theories has grown from 21 to 26 DNA Matches with a Theory of Family Relativity. I have already added the lines from a common ancestor for one of the five new DNA matches with new Theories to my RootsMagic family tree database. I rejected the other four new ToFR because I judged them to be inaccurate (all of them with same name, different family/place problems in the generation after the claimed common ancestors).
Disclosure: I receive a complimentary subscription to MyHeritage, and have received other material consideration in past years. I uploaded my autosomal DNA raw data to their DNA product. This does not affect my objective analysis of MyHeritage products. I am a subscriber to Family Tree Webinars and love it.
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