Just received similar email myself …… mine relates to a short trip (in late June) to LJU.
As above, not yet clear whether it covers both outward and / or return sectors, though it doesn’t really bother me. Just a shame to learn from
c-w-s that the wetlease arrangement maintains - as is customary ? - normal BA service standards, rather than Finnair’s. The latter would have been a bit of a result