The latest Apple Watch adds new safety features and a temperature sensor for some intriguing uses for women’s health and family planning. But otherwise it remains the same as last year’s version. Like the latest iPhones, the Series 8 gets a £50 (A$30 in Australia) price hike over its predecessor, costing from £419 (A$629) despite remaining $399 in the US, owing to weak currency rates against the dollar. But the Series 8 is not Apple’s most expensive new smartwatch. That title goes to the Ultra model costing £849 ($799/A$1,299). The new, now-midrange Series 8 watch is essentially identical to the Series 7. The iPhone-only smartwatch has a smooth metal body,…