There is never (Or I belive) any abanonment of the S.P but one can assume that all evidence is weighed against the
events mentioned actually taking place. As I have mentioned the Second Prophecy is not a authentic Noldorin text, in fact the 'Athrabeth' claims that there wasn't even a prophecy that Namo made concerning
Arda's end:
and if any change shall come and the Marring be amended,
Manwë and
Varda may know; but they have not revealed it, and it is not declared in the dooms of
Mandos.
Valaquenta; Published Silmarillion
One can therefore assume that it was a
Numenorean courruption of a Eldarin text, or idea, liek the ideas of the Sun and Moon coming from the Two
Trees, but it seems this has little basis. I believe Andreth comments on him coming back to slay
Ancalagon, though this was later given to
Earendil, and at one point
Turin came back in the Dagorath to slay Anacalagon. It's VERY confusing.
It is noteworthy that the
Elves had no myths or legends dealing with the end of the world. The myth that appears at the end of
the Silmarillion is of
Númenórean origin; it is clearly made by
Men, though Men acquainted with
Elvish tradition.
Turin was also a man, so wouldn't this be impossible and aganst his 'fate' to stay in Mandos? And doesn't he become a 'Child of a
God' at the end? Also note, again the term 'Child of a God' represents Numenorean mythos since the
Valar shouldn't rightly be called 'gods' but were dubbed so by some men, It's kind of like
Gimli calling
Galadriel 'Queen of
Lothlorien'.
Addition: It seems that Turin's slaying of
Morgoth was one of Andreth's prophecies, carried down perhaps:
The language of the Folk of Haleth was not used, for they had perished and would not rise again. Nor would their tongue be heard again, unless the prophecy of Andreth the Wise-woman should prove true, that
Túrin in the Last Battle should return from the Dead, and before he left the Circles of the World for ever should challenge the Great
Dragon of Morgoth,
Ancalagon the Black, and deal him the death-stroke.
Its [/B]Menelmakar, In Sindarian Menelvagor.
So Menelmakar is
Sindarin and Menelvagor
Quenya?
It also seems from the latter Quenta of HoME ten that the association of Menelmakar/vagor as a herald of Turin was dropped.
That Menelmakar forebodes the Last Battle is said in both sources, but LQ does not name it as a sign of Túrin Turambar.