[en] Results in JT-60U experiments in 2007 and 2008 are reviewed. In this campaign, which is the final experimental period in JT-60U, development of advanced tokamak plasma was extensively performed toward establishment of physics basis of ITER and DEMO. High integrated performance plasma with high normalized beta (β_N-2.6) and high confinement enhancement factor (H_H98(y,2)-1.0-1.1), which are comparable to those in the ITER Hybrid Scenario, and at the same time with high bootstrap current fraction (f_BS-40%) was sustained for 25 s. High density and high radiation loss fraction plasma was sustained for 12 s by adding argon and neon to a deuterium plasma. The duration of the high-performance plasmas is more than 10 times longer than the current diffusion time, τ_R. In a high beta regime exceeding the ideal MHD limit without conducting wall (no-wall limit), a new instability was observed. By suppressing the instability a high beta plasma was sustained for 5 s, which corresponds to several times longer than τ_R. Performance of reversed shear plasmas was significantly improved by utilizing the stabilizing effect of the conducting wall, and β_N-2.7 and f_BS-90% were obtained. These results significantly exceed those in the previous experimental campaign. In addition, real-time control system was improved, and ion temperature and current profile were independently or simultaneously controlled in real time. Development of new diagnostics was also continuously performed. For example, profiles of electron density and current were measured using the lithium beam probe diagnostic with high resolution. A number of important results from physics experiments were obtained in the area of transport, confinement, instability, plasma-wall interaction etc. Performance of heating and current drive systems was also extended significantly. In the electron cyclotron wave system, 2.9 MW for 5 s injection and 0.4 MW for 30 s injection to plasma were successfully demonstrated. Power modulation up to 7 kHz in synchronization with neoclassical tearing mode was also successful. In the negative-ion-based neutral beam system, 340 keV, 3 MW, 30 s injection corresponding to the highest injection energy of 80 MJ was successfully performed. (author)