This. Love this doujin/pairing to death, but its taking forever for a conclusion.
I agree. In the afterword for ch. 10 the author wrote "I plan to continue the series for a bit longer", and for ch. 11 wrote "it's about time I brought the series to an end" however they also said they had planned to release chapter 11 and 12 together but they got sick. Having planned to release two chapters simultaneously (without announcing the end of the series beforehand) makes me think there will probably be more than just one final chapter, but probably no more than two more, since the author did specifically say it's time to bring it to an end.
Either way, it's a great series, but after so many years it would be nice to get a conclusion--hopefully one that is not all out tsundere again. Tsundere is fine and all, but for me its kind of painful to keep seeing if it is never payed off with some mutual affection eventually.