everyone is just saying she's retiring because she's releasing the complete singles box and also the fact that she hasn't released any music for practically a year. Whether (sp?) or not she's retiring is still completely up in the air.
Everything is merely assumptions. Nothing to worry about (yet
)
I mean Seiko released a gigantic box with all of her albums and she just recently released a new album and a new Christmas single is coming up. Anything's possible.