Paul Baker (africancoins) is the expert here, so I will quote what he has told me so far:
"I have seen images of the 1/- and 10/- of 2010. There is only one change on the 1/-, and that is the date. However, when compared to the 10/- of 2009 and earlier dates, the 10/- of 2010 has a noticeably larger and bolder "10" for the denomination numeral. This gives it more the look of the large "20" on the 20/-. Also, the legends on the ring around the "10" and coat of arms are spaced differently and have a slightly different font: the "R" and "K" show how the font is different. I expect it's likely there will be a similar change to the 5/- 2010, if and when it appears."