I have a feeling that it's gonna be Enviros of some sort. There isn't much standing room on the Solos so CT Plus could use those but it can be messy at busy times. It's funny because I've seen one of their OSs go in and out of the Arena Shopping Park a few months ago, presumably for route training. I shouldn't be too surprised if these new mystery SDs are being delivered late and I find a few of these OSs popping up!
Nothing longer than 8.9m can go around the W5 route as there are too many tight turns due to parked cars which the current 8.8m pointers just about navigate around, on a few occasions a couple years back when I have been on the route the drivers have had to reverse or beep + make alot of noise to get people out of their houses lol in order to navigate turns.
They are brand new 8 were ordered 6 are delivered so far. I took pics of OS12 at Harringay, Sainsbury's OS10 was also there will upload the photos to my flickr soon the regs are YJ60PFx, btw as I left OS11 was coming in. These Solos seat 23 and claim to carry 31 standees at 8.8m I don't belive that some how as when OS12 left Harringay all the seats were filled up and about 10 people standing at there didn't look like there was enough room for another 10 standing let alone 21.
Aparently one of the Solo's off the W12 was on the W5 today as cover as two solos are still yet to be delivered for the W5, believed to be OS15/16. The solo's on the W12 are 7.8m and are too small for the W5 route, also in the flesh those solo's on the W5 look longer than a the same lentgh E200, maybe looks like that because of the front overhang. Mind you I wish optare would change the solo design, Optare are one of the laziest manufacturers I know of in terms of rereshing the looks of their buses.
the spectra had the same design from 1992 to 2005. the solo has the same design since 1998 were now in 2011.