A report of correspondence this week between SOTABeams and a UK radio operator alleges that Premium features of DXplorer, the WSPR analysis webware, is to be made available without an annual fee for those who own a WSPRlite.
The report suggests that the £20 annual subscription after the first, free year's access following purchase of a WSPRlite transmitter, has now vanished.
This seems to be confirmed by looking at SOTABeams' website this morning (11/12/2017), where the following text appears:
" Use of DXplorer.net is free for any
WSPR user but WSPRlite users access Premium facilities including
detailed antenna comparisons. "