No real idea about the new dasher, other than I first saw it about a week ago. At times it is very strong here, other times unheard at all. It seems that I hear it best about an hour after local sunrise. At first I thought it was night time only (I did not see it in daylight for the first few days in a row), and that it might be related to the other new dasher on 7999.2 kHz (they have the same or very similar cycle times), and thought maybe shifting daytime/night time freqs. But then I saw the 4097.2 during the day, and have seen it pretty much every day since. However, I have not yet seen 4097.2 and 7999.2 at the same time, so they still could be related.
T!