I don't remember anything which has come out earlier than like 6 months ago besides Ayu's releases , lol i have a bad memory
but these are albums which I've enjoyed a lot this year
Hitomi Shimatani - Tsuioku + LOVE LETTER
I love her songs "Viola" and "Jewel of Kiss" , they're just so awesome and she's one of the most talented j-pop singers out there in terms of vocals. not to mention really attractive too
Ken Hirai - Sentimental lovers
sorta a guilty pleasure for me lol , but there are just so many really good and enjoyable songs on it like Jealously , Hitomi wo Tojite and Signal
M-Flo - Astromantic
just so many catchy and great songs
Ayumi Hamasaki - My Story
I'll really have to add this here too , i honestly think it's really good.
there might be more albums I should add , but I don't remember them right now ( Speed's "My Bridge" is one , but I'm afraid it's from 2003 ? )