Sabine Beckmann sent a missive to the Classics list alerting folks to the discovery of a Linear A seal at the peak sanctuary at Vrysinas (there’s a number of spellings for that one). The only coverage seems to be in Greek (eNet) and doesn’t give much detail (filtered through Google Translate), but does have a nice photo:
Additional info here (mentioned on the Classics list by Ioannis Georganas): Σφραγίδα με μινωική ιερογλυφική γραφή βρέθηκε στη Δ. Κρήτη
rogueclassicism 
I think rather that it’s in the Cretan Hieroglyphic script (not Linear A).